Liquid-measuring device



v. LAMBERT LIQUID MEASURING DEVICE Sept. 21 1926.

R M M BY g g 5%;

INVE MAE 5 ATTORNEYJ Filed Dec. 21, 1923 ment through the cotiee bag.

this trans'ter of Water from one compartment by means ot'a" The Water which has percolated ough the coffee isnot of sufiicientc" Sept, 21, '.z.af= v =1 g erra idi ii is in ii i. as a.

teaser-e VICTOR LAMBERT, BEUOKLYN, NEW YORK, ASSIG'NOB YORK; N. Y.

'IO AARON M.. fSLOSS, OF NEW LIQUID-MEASURING DEVICE.

Ap'plicatienfiled December 21, 1928. Serial No. 681,924.

Co'l'lee urns such as are frequently used in res rrants and hotels-Where, cofieeis chse pensed in large quantities ordinarily consist casing which is divided by a suitable of into two compartments, .one ot oartrhon In the coffee compartment is a bag ground coii'ee is carried, and in the operation of these urns a quantity of Water is removed from the water-comparu n'ient and poured intothe coliee compartli qu id. in which the into the other is carried on strength for ordinary PLUCPOSGS and it is rec-- moved from the bottom ot he coffee. compartment andagain-poured, through the coffee hag into-the coffee compartment, this percolation being carried on as many. times as may be neeessary to makepotfeeot the desired strength. Alter. the coffee; making operation is finished the cofi eerremains,

Within the cotl'ee compartment, to be ithouiredi hen certain amount of liquid COiTEQ has beenremoved from this compart mentmore Water must be introduced into;

it and it is desirable that the amounts of water which are transferred from the Water compartment to the coffee compartment either for making or tor replenishing the supply, should be measured. It is also desirable that this measuring device-should be of such construction that its use will not interfere with the recirculation of the liquid through the coffee compartment as has been explained.

The presentinvention is directed to the provision of a measuring device Which is adapted for the purpose referred to and it consists essentially of a seriesot' telescoping sleeves mounted within thewater compart- IHGRhElllCl extending vertically therein. The lower sleeve is stationary and is connected to ,an outlet- The tWo upper sleeves are capable of being ntelescoped over the lower outwardly through .Px inter Which moves.

' compartment u'nich contains Water and the other the coffee Sometimes therefrom Irom time to timeas revtheIcot-fee compar men-t and 'measurethese quantities regardvater compartment. the original body of cotlee sleeve so thatthe height of theiupper end of the series of sleeves may be varied as may be desired. The upper end of the top sleeve is open to the Water and this sleeve carries a rack which is engaged by, a pinion. The shaft on which the pinion is mounted passes the casing of the urn and carries a handle and an indicating over a dial.

When

Water is to be Withdrawn from theuwater.

the outlet from the lower sleeveis opened and a quantity of water, which 15 determined by the difference in new'ht of the top or theupper sleeve and rater level in the compartment, Will The effective total length of the '1' then flow outwardly through; this discharge opening.

sle yes, which is determined by their relative a-*' *ustinen't, will Wt er which is Withdrawn, and by of this device itis possible to Withdraw a series oi quantities from the Water compartant and measure each of h immediately removed and transtransferred from the. Water compartment to the device Will operate to less or the position of the waterv le el in the The position of the upper sleeve Will therefore, determine the amount of Water after each WithdrawalWater maybeintrodetermine the amount of the use these quantitieswithoutrestoring the quantity of Water in -the atercompartment to its original level. i This latter operation, since it necessitates; the introduction orcold WltQYlIltO the com- 1 :partment,,reduces the temperature :of the .body of ivater and consequently. this Water cannot ferred to the coffee compartment, but must -;be. raisedto .the desired boilingtemperature.

The device, therefore, provides avmeans by- -=wh5ch measuredo uantities of water may be duced into'the water compartment through a suitable supply inlet, or else by refer'enc torthe dial it is possible to Withdraw succes by adjusting the position of the sleeves Without introducing. a further quantity of Water into-the com sive uantities of Water p a rtm ent.

lVhile the device may be used in connection with any .vesselior container from which measured quantitiesv or. a freely flowing. liqu d are to be Withdrawn, it is peculiarly 7 adapted for use-1n connection with acotlee urn,- and will hereibe illustrated in that adaptation. In the accompanying drawings that embodiment of the invention which is now preferred is illustrated in such an urn, and

Fig. 1 is a vertical view of the urn showing the device in place therein,

Fig. 2 is a plan view of the urn with the top removed,

Fig. 3 is a view of the measuring device on the line 33 of Fig. 2.

Fig. 4.- is a view of the indicating plate and pointer, and

Fig, 5 is a view of a detail of the urn showing the device in a modified form.

Referring to these drawings, the urn is seen to consist of a cylindrical casing 6, made ordinarily of a non-corrodible metal, This casing is mounted on legs 7 in any convenient location, and is provided with a bottom 8 which lies some distance inwardly from the .lower end of the casing. Below this bottom is to be placed a heating burner of any convenient form, not illustrated. At the upper end the casing is provided with a cover 9 which slips in place and is provided with a flange 10 which fits into the end of the casing and a head 11 which rests on a similar bead 12 on the upper rim of the casing. The casing is divided into two compartments 13 and 14 by a partition 15, having a flange 16 which is secured to the inner wall of the casing near its upper end, anda central depression 17 in which is placed a liner 18, usually of porcelain or other similar vitreous material. In the upper end of the compartment 1 1 which holds the coffee is mounted a bag 19, mounted on a ring 2O, of slightly greater diameter than the diameter of. the central depression in the partition. This bag is of cloth and carries a quantity of ground coffee 21.

The outer compartment 13 is to hold water and is supplied through an inlet pipe 22 provided with a valve 23 connected to the compartment near its lower end. A gauge device24c of the usual construction is con nected to the compartment near either end thereof, and serves to indicate the level of the water therein. The water compartment is also provided with a clean-out valve 25 located near its lower end.

The coffee compartment is provided with an outlet valve 26, connected by a pipe 27 wit-h the lower end of thecompartment, and this'valve 26 is used to withdraw such quantities of coffee as may be desired. The pipe 27 is connected to the outlet 28 from the coffee compartment through a three-way fitting 29. Also connected to this three-way connection is a pipe 30 which extends outwardly through the wall of the casing and is connected to a valve 31, which has an outlet connected to a pump 32 which may bGD'lELDU- ally operated or driven by a motor. The outlet of this pump is connected with a vertically extending pipe 33 which may be in the form of a gauge glass which is in turn connected at its upper end with a pipe which extends through the casing and is connected to a nozzle 35 located centrally of the casing above the bag 19. The valve 31 is also connected with the outlet of the measuring device generally indicated at 36. The pump is provided with a draw-oii' valve 37.

The measuring device consists of a plurality of sleeves or tubes, the lower tube 38 being the smallest and being connected at its lower end with a pipe 39 which extends through the wall of the casing and is threaded in the valve 31. This tube has a laterally extending flange 40 at its upper end, this flange being of such diameter as to make a close'fit within the second tube 41 which has an inturned flange i2beyond the flange 10 and closely engaging the outer wall'of the tube 38. The tube i1 is provided with a lateral flange 13, making a close fit within the third tube 4 1 which terminates at its lower v end in an inturned flange 45 closely fitting the outer wall of the tube 1-1. end of the third tube carries a loosely fitting about a guide rod 47, the lower end of which is secured in a spider 4.8 which is rigidly mounted within the lower tube 38. The upper end of the guide rod is mounted in a bracket 49 secured to the inner wall of the casing. The upper tube 44 also carries attached to it a rack 50. These several tubes may be freely telescoped within each other and their telescoping movement is guided by means of the'rod 47 so as to prevent their buckling. 'Mount'ed on a shaft 51 suit ably secured in the wall of the casing is a pinion 52 which meshes with the teeth of the rack. This shaft 51 carries a handle 53 at its outerend and secured to the casing and having an aperture through which the shaft extends is a dial 54:. This shaft also carries a pointer 55 adjacent the dial and cooper-at ing therewith.

The operation of the urn is as follows: A quantity of water is introduced into the water compartment through the intake valve 23 and the burner is then lighted. When the water has reached the desired temperature a quantity of it is withdrawn and introduced into the coffee compartment. 'The amount of water so introduced is preferably a definite quantity and to determine the amount which will be drawn from the water The upper n spider 1o compartment the measuring device is made use of. When the water compartment is full or at a predetermined level, as indicated on the gauge glass, the handle 53 is manipulated to set the measuring device for the desired quantity. Thismeasuring device is open *at the top and the water which is to be drawn from the water compartment flows through it. i-rcoordingly when the valve 31 is openthrough it and the length ed so as $0 permit theflow ofwa-ter through- 1 the measuring device, such a quantity will be discharged as lies between the top of the measuring device and the liquid level. Consequently the top of the measuring device will be placedin a position so as to permitthe desired quantity of liquid to pass of the device will grow shorter and shorter as greater an greater quantities are wvithdrayvn. The liquid flowing through'the measuring device passes through the valve 31 which is now open to the pump andthe latter is operated either manually or electrically to pump this water upwardly through the pipe 33, thence through the pipe 3% and through the nozzle The'water so discharged drops down through the mass of coffee supported in the 19, and thence into the coffee com-partment. This single percolation of the water through the coffee will not 'make a liquid of the desired strength and recirculation of. the liquid within the coffee compartment is necessary. For this purpose the valve 31 is turned so as to close the outlet of the measuring device-and connect the pipe 30 with the pump. Thepipe 30, as has been explained, is connected with the pipe 28 which forms the discharge pipe from the bottom of the coffee compartment and when the pump is operated the liquid within the coffee compartment is pumped therefrom anduagain discharged through the nozzle. This circulation may be conducted as many times as may be desired and the strength of the coffee will be shown by its coloras it passes through theglass pipe 33. 1

As the coffee is dispensed from the urn through the valve 26 the amount of liquid in the coffeecompartment will diminish and it becomes necessary from time to time to replenish it. It is desirable that the liquid so introduced should be in definite quantities and the measuring device is again made use of to determine thev amount of liquid drax'vn from the water compartment. As the quantity of liquid in this compartment is diminished the tubes of the measuring device will be telescoped farther and farther into each other until only a relatively small quantity of water remains at the bottom of the compartment. During this withdrawal, however, it will be seen that it is not necessary at any time to restore the liquid in the water compartment to its original height in order to make the measuring device effective, and this makes it possible to make more coffee at any timecwithout having to heat he water so introduced into the water compartment.

In 5 the device is shown in a slightly modified form in which case the transfer of the liquid from the water compartment to the coffee compartment is carried on by making use of the pressure developed in instead of toward and The operation of the rack and similar to that previously described but the carries a valve 59.

means operable from the water compartment when this waterais heated. In this particular arrangement the tubes. are mounted with the lar est tube downward and are adjusted toward and away from the bottom of the away from the top.

outlet from the measuring device is at the top and is connected. with a pipe 56 which.

water compartment pinion is extends through the wall ofthe casing to 7 another pipe 57 which is connected pipe 58, carrying the nozzle. The pipe 57 the pressure in the water compartment developed by heating the water will force With this arrangement water upwardly through the measuring device throu h. the several 3i ass to the nozzle 7 D o n and a QHZLDUtY'OI w ater will be withdrawn;

which depends on the difference in height of the intake end of the. measuring device and the level of the liquid in the water com-- partment. The tubes may be telescoped .so to set this intake at any desiredpoint LES within certain limits and [device will ordinarily be mounted at the bottom of the vessel so that the discharge may be by gravity although air pressure may be used so that the modified form of device illustrated in Fig. 5 mayalso be employed.

1 claim:

1. In a coffee urn having a water compartment and, a coffee compartment, a plurality of telescoping sleeves mounted vertically within the water compartment, the exterior of the urn for telescoping the sleeves to vary their effective length, an inlet at one end of one end sleeve, an outlet at the opposite end of the other end sleeve, and a pipe connected with said outlet and leading to the coffee compartment of the urn.

2. A coffee urn comprising a casing, a water compartment and a coffee compartment in the casing, a tube within the water compartment capable of adjustment to vary its height, this tube having its upper end open, and a connection with the lower end of the tube discharging into the coffee comp artment.

the quantities with-' drawn may vary according to the will of the justment to varythe vertical position of the intake, a pump outside the casing connected to the other end of the tube, and a connection from the pump discharging into the coffee compartment.

coffee urn comprising a casing, a water compartment and collee compartment in the casing, a pair of telescoping sleeves mounted vertically in the water compartment, a rack connected with one of the sleeves, a pinion engagingz tthe rack, means outside the casing for operating the pinion, a pump outside the casing connected to the lower end of the sleeve not movable by the rack and pinion, and a connection with the pump discharging pertinent;

5. A cotlee urn comprising a casing. partition therein forming a water compartment and a coffee con'ipartn'ient, a measuringdevi ccflocated Within the water compartment and through which water may be discharged, a pump connected with the outlet of the measuring device, and a pipe connected with the pump and discharging into the coffee compartment.

0. A. coffee urn comprising the combination of a casing, a partition therein forming a Water compartment and a coffee compartment, a measuring device located in the water compartment and having an inlet, this measuring device being capable of ad'- justment to dispose the inlet in various positions relative to the Water level in the Water compartment, an outlet from the measuring device, a pump connected with V the outlet, .a pipe connected with the pump into the coii'ee comand discharging into the coffeecompartment, and means operable from the exterior of the casing for adjusting the measuring device.

7. A coti'ee urn" comprising the combination of a casing, a partition mounted in the casing and forming" a water compartment and a coi'l'ee compartment, a plurality of telescoping sleeves mounted in the Water compartment and open at one end, an outlet pipe connected to the other end of the rlceves means for transterrin water from thismeasuring device to the coffee compartment, and means operable from the exterior of the'casing tor producing a relative adjustment of the sleeves to vary the position of the inlet relative to the Water level within the Water compartment.

8. A coti ee urn comprising the combination of a casing, ing a water compartment and a coilee compartment, an outlet from the water com-' partment, a connection from this outlet discharging into the coilee compartment, a plurality of telescoping sleeves mounted vertically within the Water compartment, an inlet atone end of one ofthe end sleeves, an outlet at the opposite end of the other end sleeve connected to the outlet from the compartment, a rack connected to one of the end sleeves, a pinion meshing With this rack, and means operable from the exterior of the casing for operating the pinion to vary the positions of the sleeves relative to eachother.

In testimony whereofI my signature.

VICTOR L'Al IBERT.

a partition therein form- 

